Study on Dynamic Simulation of 4-Bundle Ice-Coated Conductor Galloping Based on 3-D Model
Galloping of power transmission lines is a low frequency self-oscillation with large amplitude. The aerodynamic effect on each sub-conductor of 4-bundle conductor is different due to wake-flow-influence. In order to explore the reasons leading to galloping, a 3-D model for power transmission line is built. A two-node quadratic beam element in 3-D and a structure mass element are applied to establish the finite element model of iced 4-bundle conductor in ANSYS software. Then dynamic transient response calculations are made on this model. According to the results, difference in vibration of sub-conductors and frequency coupling of torsional and transverse vibration can be confirmed. The simulation results illustrate the wake-flow-influence effect and the coupled motions effect on galloping of 4-bundle conductor.
Paul P. Lin and Chunliang Zhang
S. J. Wu et al., "Study on Dynamic Simulation of 4-Bundle Ice-Coated Conductor Galloping Based on 3-D Model", Applied Mechanics and Materials, Vols. 105-107, pp. 474-477, 2012